Bicycle frame unit



FIG. 1 is a left side view of a bicycle frame unit according to my novel design;

FIG. 2 is a right side view of the bicycle frame unit according to my novel design;

FIG. 3 is a top view of the bicycle frame unit according to my novel design;

FIG. 4 is a bottom view of the bicycle frame unit according to my novel design;

FIG. 5 is a front view of the bicycle frame unit according to my novel design;

FIG. 6 is a back view of the bicycle frame unit according to my novel design; and,

FIG. 7 is a rear perspective view of the bicycle frame unit according to my novel design.

The dash lines included depict environment and are not part of the claimed design. 

The ornamental design for a bicycle frame unit, as shown and described. 